Multi-size lifting appliance for lifting box girder
By designing lifting tools of various sizes, the problem of multiple types of lifting tools and frequent replacements caused by different spacing of box girder lifting holes in railway construction was solved, enabling rapid transportation and efficient construction, and reducing costs and construction period.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA RAILWAY SIXTH GROUP CO LTD
- Filing Date
- 2025-06-05
- Publication Date
- 2026-06-09
AI Technical Summary
In existing technologies, the different spacing of the lifting holes for box girders in railway construction results in a variety of lifting tools, high processing costs, and frequent replacement of lifting tools, which affects handling efficiency and construction period.
Design a multi-size lifting tool, including a transition beam and a transition block, with multiple connection holes and operating channels of different diameters, which can be matched with different box girder lifting holes. It connects to the box girder lifting tool rod through the first connection hole and to the lifting equipment rod through the second connection hole, so as to achieve rapid transfer.
It simplifies construction steps, shortens construction period, improves handling efficiency, reduces usage costs, reduces employee workload, and expands the scope of application of lifting equipment.
Smart Images
Figure CN224336997U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of railway construction technology, specifically relating to a multi-size lifting tool for box girder hoisting. Background Technology
[0002] Currently, during railway construction, due to cost control, the lines from stations to EMU depots or connecting lines between two lines generally use box girder types different from those on the main line. This results in different spacing between the lifting holes of the box girders. Existing large-scale box girder construction machinery (such as beam lifting machines or beam moving machines) only come with one or two sizes of lifting holes when they leave the factory. Various different lifting tools need to be customized for construction needs.
[0003] Customized lifting tools can only be applied to corresponding box girders. In railway construction, various box girders with different lifting hole spacings are used. To meet the installation requirements, different lifting tools are customized, which increases manufacturing costs. When the beam moving machine moves different box girders, the lifting tools need to be changed frequently to connect to the corresponding lifting holes on the box girder. Frequent changes severely delay the construction period and affect the moving efficiency. Frequent changes of lifting tools also bring additional workload to the employees and affect work efficiency. Utility Model Content
[0004] This application provides a multi-size lifting tool for box girder hoisting, aiming to solve the technical problems of low transportation efficiency caused by the large variety of lifting tools, high processing costs, and frequent tool changes during box girder construction in the prior art.
[0005] To achieve the above objectives, the technical solution adopted in this application is as follows:
[0006] A multi-size lifting tool for box girder hoisting is provided, including:
[0007] A transition beam is provided, wherein the transition beam has multiple sets of connecting holes, each set of connecting holes including multiple first connecting holes symmetrically arranged at both ends of the transition beam. The first connecting holes are vertically continuous and are used to connect to the lifting rods of the box girder. The diameters of the first connecting holes in adjacent sets of connecting holes are different.
[0008] Two adapter blocks are symmetrically arranged at the top of both ends of the adapter beam. The adapter blocks have an operating channel inside. At least one side of the operating channel is open, and the opening direction is perpendicular to the vertical direction. The top of the operating channel has a second connecting hole that communicates with the operating channel. The second connecting hole is connected to the lifting rod of the hoisting equipment.
[0009] In one possible implementation, one of the adapter blocks has two second connection holes, which are spaced apart on the top of the adapter block along the width direction of the adapter beam. The operation channel corresponds one-to-one with the second connection hole, and the bottom of the operation channel communicates with the corresponding first connection hole.
[0010] In one possible implementation, the two adapter blocks have a reinforcing ramp formed on one of their opposite sides, the reinforcing ramp gradually tilting from top to bottom away from the central axis of the adapter blocks.
[0011] In one possible implementation, the multi-size lifting tool for box girder hoisting further includes multiple first limiting members and multiple second limiting members, with the multiple first limiting members respectively disposed in the corresponding operating channels;
[0012] The lifting device's lifting rod is defined as the first lifting rod, and the box girder's lifting rod is defined as the second lifting rod. Multiple first limiting members are respectively connected to the bottom end of the corresponding first lifting rod to limit the upward displacement of the first lifting rod; the second limiting member is connected to the top end of the corresponding second lifting rod to limit the downward displacement of the second lifting rod.
[0013] In one possible implementation, the adapter block is welded and fixed to the adapter beam, and the two adapter blocks and the adapter beam cooperate to form a U-shaped structure.
[0014] In one possible implementation, the central axes of the plurality of first connecting holes in the plurality of connecting hole groups are all located in the same vertical plane, which is parallel to the major axis of the transition beam.
[0015] In one possible implementation, the inner diameter of the plurality of first connecting holes decreases sequentially from both ends of the adapter beam toward the middle.
[0016] In one possible implementation, the operating channel is provided with a reinforcing rib plate, which divides the operating channel from top to bottom into a first cavity and a second cavity. The first cavity is connected to the second connecting hole, and the second cavity is connected to the corresponding first connecting hole.
[0017] In one possible implementation, the transition beam has a through-hole for weight reduction.
[0018] In one possible implementation, a reinforcing plate is provided at the top of the adapter beam corresponding to the first connecting hole, and the reinforcing plate is used to disperse the pressure at the top of the first connecting hole.
[0019] The multi-size lifting tool for box girder hoisting provided in this application, compared with the prior art, offers a connecting device with a first connecting hole and a second connecting hole. During operation, the first connecting hole connects to the lifting rod of the box girder lifting tool, and the second connecting hole connects to the lifting rod of the hoisting equipment (beam lifting machine or beam moving machine) for box girder transfer. When the model of the box girder to be transferred changes, the lifting rod in the first connecting hole is disassembled, and a first connecting hole corresponding to the box girder to be transferred is selected and connected to the lifting rod adapted to the box girder. This device can quickly lift new models of box girders without disassembling the lifting equipment during the entire process. The equipment's lifting rods, with different sizes of the first connecting holes, can connect previously mismatched mechanical lifting equipment and box girders, enabling rapid transfer and avoiding delays caused by frequent changes in lifting rods, thus improving handling efficiency. It also solves the problem of needing to customize multiple lifting rods due to different box girder lifting hole spacings; a single lifting rod can connect to box girders with various lifting hole spacings through different diameter first connecting holes, expanding its application range and reducing operating costs. During construction, frequent disassembly and assembly of lifting rods is eliminated, simplifying construction steps and shortening the construction period. Furthermore, it reduces the extra workload for employees changing lifting rods during handling operations, improving employee work efficiency. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0021] Figure 1 This is a front view structural schematic diagram of a multi-size lifting tool for box girder hoisting provided in an embodiment of this application;
[0022] Figure 2 for Figure 1 Side sectional view;
[0023] Figure 3 for Figure 1 A top view of the transition beam used in the process;
[0024] Figure 4 This is a cross-sectional view of the transfer block in a multi-size lifting tool for box girder hoisting, used in another embodiment of this application.
[0025] Explanation of reference numerals in the attached figures:
[0026] 1. Adapter beam; 11. First connecting hole; 12. Weight reduction hole;
[0027] 2. Adapter block; 21. Second connecting hole; 22. Reinforcing slope; 23. Reinforcing rib; 24. Operating channel;
[0028] 3. First limiting component;
[0029] 4. Second limiting component;
[0030] 5. Reinforcing plate;
[0031] 6. Second boom;
[0032] 7. First lifting rod;
[0033] 8. Lifting equipment. Detailed Implementation
[0034] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.
[0035] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. The following description of at least one exemplary embodiment is actually illustrative only and is in no way intended to limit this application or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0036] It should be noted that the terms "length," "width," "height," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "head," and "tail," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.
[0037] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "linking," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0038] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways, and the spatial relative descriptions used herein will be interpreted accordingly.
[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Additionally, "multiple" and "several" mean two or more, unless otherwise explicitly specified.
[0040] Please refer to the following: Figures 1 to 4 The multi-size lifting tool for box girder hoisting provided in this application is described below. The multi-size lifting tool for box girder hoisting includes a transition beam 1 and two transition blocks 2. The transition beam 1 is provided with multiple sets of connecting holes. Each set of connecting holes includes multiple first connecting holes 11 symmetrically arranged at both ends of the transition beam 1. The first connecting holes 11 are arranged vertically and are used to connect with the lifting rod of the box girder lifting tool. The diameter of the first connecting holes 11 in two adjacent sets of connecting holes is different. The two transition blocks 2 are symmetrically arranged at the top of both ends of the transition beam 1. The interior of the transition block 2 is provided with an operating channel 24. At least one side of the operating channel 24 is open, and the opening direction is perpendicular to the vertical direction. The top of the operating channel 24 is provided with a second connecting hole 21 communicating with the operating channel 24. The second connecting hole 21 is connected to the lifting rod of the hoisting equipment.
[0041] It should be noted that the transition beam 1 and the transition block 2 are made of steel to ensure structural strength.
[0042] It should be noted that after the lifting rod of the box girder passes through the first connecting hole 11, it is screwed to the nut. The nut abuts against the transition beam 1 from top to bottom, connecting the lifting rod of the box girder to the transition beam 1. After the lifting rod of the hoisting equipment passes through the second connecting hole 21, it is screwed to the nut. The nut abuts against the transition block 2 from top to bottom, connecting the lifting rod of the hoisting equipment to the transition block 2.
[0043] It should be noted that each first connecting hole 11 corresponds to a different type of box girder lifting rod. By connecting different first connecting holes 11 with the corresponding lifting rods, each connecting hole group can correspond to a different type of box girder.
[0044] It should be noted that the hoisting equipment refers to the beam lifting machine or beam moving machine, which is a hoisting equipment used in box girder construction. The mounting holes on it are the factory default fixed size.
[0045] The principle of the multi-size lifting tool for box girder hoisting provided in this embodiment is as follows: a connecting device with a first connecting hole 11 and a second connecting hole 21 is provided. During operation, the first connecting hole 11 is connected to the lifting rod of the box girder lifting tool, and the second connecting hole 21 is connected to the lifting rod of the hoisting equipment (beam lifting machine or beam moving machine) to carry out the transfer of the box girder. When the model of the box girder to be transferred changes, the lifting rod in the first connecting hole 11 is disassembled, and the first connecting hole corresponding to the box girder to be transferred is selected. The first connecting hole is connected to the lifting rod of the lifting tool that is compatible with the box girder to be transferred.
[0046] The multi-size lifting tool for box girder hoisting provided in this embodiment, compared with the prior art, enables the device to quickly hoist new models of box girders. The entire process does not require disassembling the lifting tool rod of the hoisting equipment. Different sizes of the first connecting hole 11 can connect originally mismatched mechanical hoisting equipment and box girders, achieving rapid transfer and avoiding delays in the construction period caused by frequent changes of lifting tools, thus improving handling efficiency. It solves the problem of needing to customize multiple lifting tools due to different spacing of box girder lifting holes. One lifting tool can be connected to box girders with various lifting hole spacings through the first connecting hole 11 of different diameters, expanding the scope of application and reducing the cost of use. During construction, there is no need to frequently disassemble and assemble the lifting tool, simplifying the construction steps and shortening the construction period. It also reduces the extra workload of employees changing lifting tools during handling operations, improving the work efficiency of employees.
[0047] For detailed implementation, please refer to the appendix. Figure 1 and Figure 2 Define the lifting rod of the hoisting equipment as the first lifting rod 7; define the lifting rod of the box girder as the second lifting rod 6, and attach... Figure 1 The hoisting equipment 8 in the text refers to hoisting equipment (beam lifting machine or beam moving machine).
[0048] In some embodiments, see Figure 1 and Figure 2A transition block 2 has two second connecting holes 21, which are spaced apart at the top of the transition block 2 along the width direction of the transition beam 1. An operating channel 24 corresponds one-to-one with each of the second connecting holes 21, and the bottom of the operating channel 24 communicates with the corresponding first connecting hole 11. During use, the two second connecting holes 21 can be connected to the two first lifting rods 7 of the lifting equipment 8, increasing lifting stability. The two connecting holes better distribute the force, reducing problems such as loose connections or swaying of the lifting equipment due to uneven force distribution during lifting. The layout of the two second connecting holes 21 and the operating channel 24 allows the force transmitted from the lifting equipment's lifting rods to the transition beam 1 to be more evenly distributed across multiple first connecting holes 11 and corresponding box girder connection points, helping to reduce the risk of excessive localized stress, ensuring the mechanical performance of the entire lifting system, and extending the service life of the lifting equipment and related components. This allows operators to quickly and accurately select the appropriate connection method based on the specific hoisting hole spacing and hoisting requirements of the box girder, reducing the difficulty and time consumption of adjustments during the connection process and improving the efficiency and convenience of hoisting operations.
[0049] In some embodiments, see Figure 1 The two transition blocks 2 form a reinforcing slope 22 on opposite sides, which gradually slopes away from the central axis of the transition block 2 from top to bottom. The reinforcing slope 22 can effectively distribute the pressure borne by the transition block 2 during hoisting, avoid stress concentration in certain local locations, thereby enhancing the strength and stability of the entire lifting device structure; at the same time, it can reduce the weight of the transition block 2 without affecting the connection strength and contact area between the transition block 2 and the transition beam 1.
[0050] In some embodiments, the multi-size lifting tool for box girder hoisting further includes multiple first limiting members 3 and multiple second limiting members 4. The multiple first limiting members 3 are respectively disposed in the corresponding operating channels 24. The lifting rod of the hoisting equipment is defined as the first lifting rod 7, and the lifting rod of the box girder is defined as the second lifting rod 6. The multiple first limiting members 3 are respectively connected to the bottom end of the corresponding first lifting rod 7 to limit the upward displacement of the first lifting rod 7. The second limiting members 4 are connected to the top end of the corresponding second lifting rod 6 to limit the downward displacement of the second lifting rod 6.
[0051] In this embodiment, the first limiting member 3 is screwed to the bottom end of the corresponding first lifting rod 7, allowing the first lifting rod 7 to disengage upwards from the second connecting hole 21. The first limiting member 3 provides reliable friction and mechanical locking during the connection process, preventing the bottom end of the lifting rod from accidentally disengaging upwards from the second connecting hole 21, ensuring the stability of the connection between the lifting device and the lifting equipment, thereby enhancing the reliability of the entire lifting system. Workers can screw the first limiting member 3 into the bottom end of the first lifting rod 7 and connect it to the second connecting hole 21, increasing ease of assembly and disassembly and reducing difficulty. The second limiting member 4 can be connected to the top end of the second lifting rod 6, and the second limiting member 4 abuts against the top of the transition beam 1, restricting the second lifting rod 6 from disengaging downwards, improving the stability and safety of the transport.
[0052] As a specific embodiment of the first limiting member 3 and the second limiting member 4, the first limiting member 3 and the second limiting member 4 are respectively made of nuts and screwed to the corresponding lifting rods of the lifting device. The first limiting member 3 abuts against the top of the operating channel 24 to restrict the first lifting rod 7 from moving upward, and the second limiting member 4 abuts against the top of the transition beam 1 to restrict the second lifting rod 6 from moving downward.
[0053] As one specific embodiment of the first limiting member 3 and the second limiting member 4, see [reference]. Figure 4 The first limiting member 3 and the second limiting member 4 both include a pin and a positioning block. Taking the second lifting rod 6 as an example, the top of the second lifting rod 6 is attached with a nut, and the nut and the second lifting rod 6 are screwed together. The positioning block of the second limiting member 4 is sleeved on the second lifting rod 6 and presses down against the nut. The pin passes through the positioning block and the second lifting rod 6 simultaneously along the radial direction of the second lifting rod 6, restricting the positioning block from rising. When the box girder is being lifted, the positioning block and the transition beam 1 cooperate to squeeze the nut, thereby fixing the second lifting rod 6.
[0054] In some embodiments, see Figure 1 The adapter block 2 is welded and fixed to the adapter beam 1, and the two adapter blocks 2 and the adapter beam 1 cooperate to form a U-shaped structure. Welding greatly improves the structural strength and stability of the entire multi-size lifting device, effectively resisting various external forces generated during lifting. The U-shaped structure can better adapt to forces of different directions and magnitudes, evenly distributing the force throughout the lifting device during lifting and avoiding localized stress concentration. The open design of the U-shaped structure makes the internal structure of the lifting device relatively easy to observe. Workers can easily inspect the welded joints between the adapter block 2 and the adapter beam 1, as well as the overall internal connections of the lifting device, promptly identifying potential problems. This helps in timely repair and maintenance, extending the service life of the lifting device and reducing construction delays and cost increases caused by equipment failure.
[0055] In some embodiments, see Figure 1 and Figure 4The central axes of the multiple first connecting holes 11 in the multiple connecting hole groups are all located in the same vertical plane, which is parallel to the long axis of the transition beam 1. During the hoisting of the box girder, the tension from the box girder is evenly distributed on both sides of the transition beam 1, effectively preventing tilting or twisting of the transition beam 1 due to uneven stress. This ensures the stability of the lifting equipment during hoisting, enhances the reliability of the entire hoisting system, and reduces the risk of structural deformation or damage caused by excessive local stress. For hoisting holes at different locations on different box girders, the symmetrically arranged first connecting holes 11 facilitate connection with the second lifting rod 6, allowing for accurate alignment between the second lifting rod 6 and the hoisting holes on the box girder. This improves installation efficiency and accuracy, helps shorten hoisting operation time, and increases construction efficiency.
[0056] See Figure 3 The dashed line marked S refers to the vertical plane where the multiple first connecting holes 11 are located.
[0057] In some embodiments, the inner diameter of the plurality of first connecting holes 11 gradually decreases from both ends of the transition beam 1 towards the middle. This gradual decrease in inner diameter of the first connecting holes 11 makes the structure of the transition beam 1 at the connection point more compact and rational. The smaller inner diameter of the middle region enhances the structural strength of this part of the transition beam 1, better resisting tensile and compressive forces and preventing deformation or damage to the connection point due to excessive stress. It also better adapts to variations in the size of the lifting holes for different box girders. For box girders of different specifications, it offers higher adaptability, reducing the need for additional design or adjustment of the connection structure due to differences in box girders, and lowering production costs.
[0058] In some embodiments, see Figure 3 The operating channel 24 is equipped with reinforcing ribs 23, which divide the operating channel 24 into a first cavity and a second cavity from top to bottom. The first cavity communicates with the second connecting hole 21, and the second cavity communicates with the corresponding first connecting hole 11. The reinforcing ribs 23 improve the structural strength of the operating channel 24, making it more stable and less prone to deformation when subjected to various forces generated during hoisting. The reinforcing ribs 23 divide the operating channel 24 into the first and second cavities. The force from the hoisting equipment's lifting rod can be transmitted to the first cavity through the second connecting hole 21, then distributed to the second cavity via the reinforcing ribs 23, and finally transmitted to the corresponding first connecting hole 11 for connection with the box girder, avoiding force concentration and ensuring the uniformity of force distribution across the entire lifting device. By dividing the operating channel 24 into different chambers using the reinforcing ribs 23, the internal space of the operating channel 24 is effectively utilized. This spatial layout ensures both force transmission and the realization of the limiting function, while also making the entire structure of the operating channel 24 more compact and orderly.
[0059] In some embodiments, see Figure 3The transition beam 1 has a through-hole 12 in the middle. The through-hole 12 directly reduces the material usage of the transition beam 1, thereby reducing the weight of the entire lifting device. This makes the lifting device easier to operate, install, disassemble, and move. The reduced weight of the transition beam 1 reduces the lifting power required, thus reducing energy consumption and saving costs. The addition of the through-hole 12 simplifies the manufacturing process, which helps to reduce production costs and improve production efficiency.
[0060] In a specific implementation, as one way the weight-reducing hole 12 is opened, the weight-reducing hole 12 is a square hole, see reference. Figure 3 The four sides of the weight reduction hole 12 are parallel to the corresponding sides of the transition beam 1, and the central axis of the weight reduction hole 12 overlaps with the central axis of the transition beam 1.
[0061] As another embodiment of the weight reduction hole 12, multiple weight reduction holes 12 are provided, and the multiple weight reduction holes 12 are arranged at intervals along the length direction of the transition beam 1. The weight reduction holes 12 are connected vertically to reduce the weight of the transition beam 1.
[0062] In some embodiments, see Figure 4 A reinforcing plate 5 is provided on the top of the transition beam 1 corresponding to the first connecting hole 11. The reinforcing plate is used to apply pressure to the top of the first connecting hole 11. When using this device to connect the lifting hole of the box girder, the reinforcing plate 5 can prevent direct friction between the first connecting hole 11 and the box girder lifting hole, thus avoiding wear of the connecting hole due to long-term friction and extending the service life of the connection part.
[0063] In practice, a nut is screwed to the top of the second rod 6. After the second limiting member 4 is screwed to the top of the second rod 6, the nut is pushed to abut against the transition beam 1 to fix the second rod 6 and the transition beam 1. The weight of the box girder is large, which will cause the nut to press down on the first connecting hole 11. The reinforcing plate 5 can disperse the pressure on the first connecting hole 11, prevent the first connecting hole 11 from deforming, and extend its service life.
[0064] The reinforcing plate 5 can fill any tiny gaps that may exist between the connecting holes, preventing dust, moisture, and other impurities from entering the connection area. This reduces problems such as loosening or corrosion caused by impurities, further improving the stability and reliability of the connection. During the connection process, the reinforcing plate 5 can distribute the pressure from the connecting components. When tightening the connecting bolts, it can evenly distribute the pressure around the connecting holes, preventing excessive local pressure from damaging the connecting holes or the transition beam 1.
[0065] Specifically, the reinforcing plate 5 can be a rubber reinforcing plate 5 to disperse the pressure on the first connecting hole 11.
[0066] The following is a specific embodiment of this device:
[0067] The new lifting sling connects to the original lifting sling with a center-to-center distance of 3.8m × 1m. A connecting device is provided to quickly connect the old lifting sling to the new lifting sling.
[0068] The transition beam 1 and the transition block 2 are mainly welded from steel plates with a thickness of 25mm. The new lifting rod is installed at the first connecting hole 11 using a nut, and the old lifting rod is installed at the second connecting hole 21 using a nut. The old lifting rod refers to the lifting rod of the beam lifting machine, and the new lifting rod refers to the lifting rod connected to the lifting hole of the box girder.
[0069] Multiple first connecting holes 11 are provided, and the first connecting holes 11 pass through the transition beam 1 vertically; two first connecting holes 11 are set as a group and are spaced apart along the long axis of the transition beam 1, and two first connecting holes 11 in the same group are spaced apart along the short axis of the transition beam 1.
[0070] This lifting tool's crossbeam is suitable for double-line beams with lifting point spacing of 4020mm, 3800mm, 3660mm, and 3300mm×1000mm, and a beam weight of 900t; and for single-line beams with lifting point spacing of 2100mm and 1800mm×1000mm, and a beam weight of 550t.
[0071] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A multi-size lifting tool for box girder hoisting, characterized in that, include: A transition beam is provided, wherein the transition beam has multiple sets of connecting holes, each set of connecting holes including multiple first connecting holes symmetrically arranged at both ends of the transition beam. The first connecting holes are vertically continuous and are used to connect to the lifting rods of the box girder. The diameters of the first connecting holes in adjacent sets of connecting holes are different. Two adapter blocks are symmetrically arranged at the top of both ends of the adapter beam. The adapter blocks have an operating channel inside. At least one side of the operating channel is open, and the opening direction is perpendicular to the vertical direction. The top of the operating channel has a second connecting hole that communicates with the operating channel. The second connecting hole is connected to the lifting rod of the hoisting equipment.
2. The multi-size lifting tool for box girder hoisting as described in claim 1, characterized in that, One of the adapter blocks has two second connection holes, which are spaced apart on the top of the adapter block along the width direction of the adapter beam. The operation channel corresponds to each of the second connection holes, and the bottom of the operation channel communicates with the corresponding first connection hole.
3. The multi-size lifting tool for box girder hoisting as described in claim 2, characterized in that, The two adapter blocks have a reinforcing slope on one side facing each other, and the reinforcing slope gradually slopes away from the central axis of the adapter block from top to bottom.
4. The multi-size lifting tool for box girder hoisting as described in claim 1, characterized in that, The multi-size lifting tool for box girder hoisting also includes multiple first limiting members and multiple second limiting members, with the multiple first limiting members respectively located in the corresponding operating channels; The lifting device's lifting rod is defined as the first lifting rod, and the box girder's lifting rod is defined as the second lifting rod. Multiple first limiting members are respectively connected to the bottom end of the corresponding first lifting rod to limit the upward displacement of the first lifting rod; the second limiting member is connected to the top end of the corresponding second lifting rod to limit the downward displacement of the second lifting rod.
5. The multi-size lifting tool for box girder hoisting as described in claim 1, characterized in that, The adapter block is welded and fixed to the adapter beam, and the two adapter blocks and the adapter beam cooperate to form a U-shaped structure.
6. The multi-size lifting tool for box girder hoisting as described in claim 1, characterized in that, The central axes of the multiple first connecting holes of the multiple connecting hole groups are all located in the same vertical plane, which is parallel to the long axis of the transition beam.
7. The multi-size lifting tool for box girder hoisting as described in claim 6, characterized in that, The inner diameter of the plurality of first connecting holes decreases sequentially from both ends of the adapter beam toward the middle.
8. The multi-size lifting tool for box girder hoisting as described in claim 2, characterized in that, The operating channel is provided with a reinforcing rib plate, which divides the operating channel into a first cavity and a second cavity from top to bottom. The first cavity is connected to the second connecting hole, and the second cavity is connected to the corresponding first connecting hole.
9. The multi-size lifting tool for box girder hoisting as described in claim 1, characterized in that, The transition beam has a through-hole for weight reduction in the middle.
10. The multi-size lifting tool for box girder hoisting as described in claim 4, characterized in that, The top of the adapter beam is provided with a reinforcing plate corresponding to the first connecting hole, and the reinforcing plate is used to disperse the pressure at the top of the first connecting hole.